Pedido de patente depositado
#2.1
05/23/1989
RPI 970
Application data
Number
PI8901637Type
Filing
Publication
The letters patent expired on 12/15/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 05/23/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
E. P. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
05/23/1989
RPI 970
#21.1
Patente extinta em 07/04/2004
12/15/2009
RPI 2032
#16.1
03/01/1995
RPI 1265
#13.1
09/27/1994
RPI 1243
#9.1
05/24/1994
RPI 1225
#4.1
04/09/1991
RPI 1062
#3.1
10/30/1990
RPI 1039
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.